Category
Text & utilities
Every tool and article in this category, gathered in one place.
Tools
Cron expression explainer
Paste a crontab schedule and get every field read back in plain language, the footguns flagged, and the next runs computed.
Expect script explainer
Paste an Expect script and read what it would do, command by command: what it spawns, what it waits for, what it types, when it hands over to you. Then the dialogue it conducts and the findings: a password in clear text, a timeout left at the default or set to never, a pattern that matches too soon, a send without the return the program waits for, a script that ends before the program has answered. Parsed with the Tcl 8.4 engine, never run; every rule cites the expect(1) manual.
Greek alphabet explainer
Type Greek and get names plus transliteration; type letter names and get glyphs. The full 24-letter table explains where engineers meet each one, from μ micro to Ω ohms.
Text Diff
Compare two blocks of text and see exactly what changed, line by line, with inline word-level highlighting on edited lines. Optionally ignore whitespace or case. Everything is computed in your browser; your text is never sent anywhere.